The laying of the wreath at the Tomb of the Unknown Soldier is pervaded by a sonorous trumpet. I've heard it a million times in movies, but to pick up the resonance, the subtle variation in the tapering off of each note in the live performance is powerful. I feel directed to observe, obey, and to be humble. Needless to say the trumpet call has a high signal to noise ratio.
The Tomb is an axial memorial, looking out over the Potomac. It induces an axial movement, the epitome of military precision. It functions to obliterate the visual and audible noise of the landscape and hone your attention on its grandeur.
Arlington itself is a militarized landscape, gravestones like white pixels coding a neutral green landscape.
The hills once belonged to Robert E. Lee. It is that note that I think is most interesting. Before this was a cemetery, it was a majestic house and estate. To prevent Lee from returning to the estate, the first graves were dug in Mrs. Lee's rose garden. It became an occupation by cadavers.
I walked among the rows and encountered a solemn sound. Bagpipes for me evoke more than anything the open landscape. It is the sound of air itself. It has just enough noise to allow it to absorb into the atmosphere. The trumpet, on the other hand, demands obedience to its signal. Listen: